﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp1
{
    class Circle : Shape
    {
        private int radius;

        public int Radius
        {
            get { return this.radius; }
            set { this.radius = value; }
        }
        public override void GetArea(double q)
        {
            Console.WriteLine("圆面积是：" + q * q * 3.14);
        }
    }
}